Iran’s Islamic Revolutionary Guards Corps (IRGC) has test-fired several ballistic missiles, state television said, challenging a United Nations resolution and drawing a threat of a diplomatic response from the United States.

Two months ago, Washington imposed sanctions against businesses and individuals linked to Iran’s missile programme over a test of the medium-range Emad missile carried out in October 2015.

A US State Department spokesman, Mark Toner, said Washington would review the incident and, if it is confirmed, raise it in the UN security council and seek an “appropriate response”.